Roller-bearing.



H. V. SMITH.

ROLLER BEARING.

APPLICATION FILED JAN.11.1909.

ggfi gfi, Patented Oct. 12, 1909.

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HENEY V. 0F BRIDGEPORT, CONNECTICUT, ASSIGNOB OF ONE-HALF TO EUGENE H.H. SMITH, OF BRIDGEPORT, CONNECTICUT.

ROLLERFBEARING.

scenes.

; Specification of Letters Patent.

Patented Uct. 12, 1909.

Application filed. January 11, 1909. Serial No. 471,564.

To all whom it may concern: v

lie it known that I, llnnnr V. SMITH, a citizen of the United States,residing at Bridgeport, county of Fair-field, State of in adjusting andcentering the spindle and the wear upon spindles and puppet heads havebeen serious items of expense in the running and maintenance of themachines.

In my present machine, emery and dust are effectually excluded from thebearings, the spindle is easily set in place and the use of tools isdone away with other than a wrench for tightening up a longitudinallymovable bearing head.

Inorder to produce a machine which shall do away with the objectionsheretofore existing' to this class of machines, and while admirablyadapted to all classes of work and all classes of workmen, shall beespecially adapted for use by unskilled workmen on account of itsperfect simplicity and the factthat it isself-adjusting, I have devisedthe novel polishing frame of which the following description inconnection with the accompanying drawing is a specification, referencevcharacters being used to indicate the several parts:

Figure 1 is a side elevation of my novel machine complete, the base ofone of the bearing heads being. in transverse section; Fig. 2 a crosssection of the bed with one of the bearing heads in front elevation; andFig. 3 is a longitudinal section on an en larged scale of one of thebearing heads.

The essential feature of novelty of the present machine is that thespindle carriers revolve with the spindle.

10 denotes the bed, 11 the bearing heads complete, 12 standards by whichthe bearing heads are carried and 13 basesfrom which the standardsextend. Either or both of the bearing heads are .made longitudinallyadjustable on the bed.

14: denotes bolts which pass through the bases and through slots 15 inblocks 16 which other member of the outer ball race.

' for emery lie in recesses 40 and are rigidly secured to the bases bybolts 17. The bearing heads are locked in position after adjustment bmeans of nuts 18 on bolts let.

19 denotes the spindle which is shown as provided with a belt pulley 20and with a slightly tapering portion indicated by 21 (exaggerated in thedrawing) which receives a grinding or polishing wheel, indicated bydotted lines in Fig. 1. Each end of the spindle is tapered as at 22 andengages a correspondingly tapering socket 23 in a spindle carrier 24.

The essential feature of the invention is that the spindle carriersrotate in suitable bearings and that they carry the spindle byfrictional engagement therewith. I preferably use bearings ofsubstantiall the type illustrated in Fig. 3. Each spin le carrier withthe parts which collectively comprise the bearing is received in asocket 25 in a bearing head 11. The spindle carrier is provided withshoulders 26 and 27 which serve as members of ball races. Correspondingwith shoulder 26 is an outer block 28, through which the spindle passes,which bears against a shoulder 38 in socket 23 and the forward end ofwhich comprisescthe responding with shoulder 27 is an inner block 29lying at the inner end of socket 23 which comprises the other member ofthe inner ball race. 30 denotes balls in the races. Block 29 is looselysecured to the inner end of the spindle, to prevent detachment therefromwhen the bearing is'rehead 32 loosely socketed in the block. Block 28 isheld against detachment when the bearing is removed by means of a collar33 which is secured in place by a set screw 34.

moved, by means of a screw 31 having a The bearingcomplete, that is thespindle carrier and the blocks, is retained in the socket by means of aring 35 shown as secured in position by screws. At the center of theretaining ring is an opening 36 through which the end of the spindle maybe passedfreely. 37 denotes a packing ring which is recessed into theouter end of the spindle carrier and is wholly covered by ring 35. Thisconstruction renders it impossible or dust to enter the bearing.

The operation will be readily understood from the drawing. To insert orremove a spindle, it is simply necessary to loosen one of the bases andmove the corresponding standard and bearing head longitudinally outwardfar enough to permit the spindle to be inserted or removed. Havingplaced one end of the spindle in the socket in the fixed spindlecarrier, the other end is placed in alinement with the socket in theother carrier and the base, standard and bearing head are moved inwarduntil the end of the spindle closely engages the socket in the carrier.It is obvious that the ends of the spindle must engage the sockets inthe carriers closely and on the other hand that the shoulders on thecarriers must not be forced inward upon the balls tightly enough tointerfere with the free rotation of the carriers.

It will be noted that the bearings areperpetually self-adjusting tocompensate for the wear of use, for the reason that each time a spindleis inserted the loose bearing is moved inward far enough to cause bothends of the spindle to engage the sockets in the carriers closely and toset the shoulders on the carriers in proper relation to the balls.

This is a matter that becomes quickly apparhaving a socket, of a rotaryspindle carrier in said socket having shoulders, blocks in said socketfacing the shoulders, balls between the shoulders and the blocks, acollar secured to the spindle to prevent the outer block from detachmentWhen the carrier is removed and a screw passing through the inner blockand engaging the end of the carrier to retain said inner block againstdetachment when the carrier is removed.

In testimony whereof I aiiix my signature, in presence ot'two Witnesses.

' HENRY v;

Witnesses i Geo. P. U 'e o, WALTER H. BuLLAro.

SM TH.

